of cincinnati



L. S. KUHN.

BEER MASH TUB.

Patented Mar. 3, 1885.

No. 313,430.vv

NITEl STATES LEO S. KUHN, OAF CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TOGEORGE F. AHLERS AND ISAAC A. HOFFMAN, OF SAME PLACE.

BEER-MASH TUB.

SPECIFICATION forming part ofLetterS Patent No. 313,430, dated March 3,1885.

A ppliration tiled May 29, 1834. (No model.)

To all w/tom, t may concern.'

Be'it known that I, LEO S. KUHN, acitizen of the United States, and aresident of Cincinnati, in the county of Hamilton. and State of Ohio,have invented certain new and useful Improvements in Beer-Mash Tubs, ofwhich the following is a specification. Y

My invention relates to improved devices for cooking and cooling mashes.

The object of my invention is to provide suitable means for uniformlycooking and rapidly cooling mashes in the same vessel. This I accomplishby the novel construction and combination of devices hereinafterdescribed ;5and claimed, reference being made to the accompanyingdrawings, illustrating my inven tion, in which- Figure l represents aside elevation of my improvement, Fig. 2, a section on line x x, Fig. 1.Fig. 3 is a detail sectional elevation of the union coupling-joint.

A representsa trough-shaped tub, c, legs for supporting the same.

B represents journal-brackets.

C represents asha-ft journaled in the brackets B B, and passinglongitudinally through the receptacle A, which is preferably made with asemicircular bottom to facilitate the uniform stirring of the mash.

3o B represents a loose cover, which can be raised when the device isused to cool a mash.

D D represent journal-bearingsin the ends ofthe tub A.

EE represent the union-coupling waterjoints, loosely mounted,respectively, on the enlarged end portions, C C', of the shaft C, suchjoints each comprising a cylinder, b, arranged to createan annularwater-chamber, d, around the part C of the shaft, and communicating byports E2 with a longitudinal channel, g, formed Within the enlargedshaft ends C.. A water-supply pipe, c', is in communication with theexterior chamber, cl, of the coupling-joint E. The shaft endsv C arearranged to revolve in bearings D D, secured in the ends of thecylinder, and to such shaft ends, Within the tub, are rigidly securedthe heads H H,which are connected at or near their peripheries by aseries of longitudinal wings, I. A pipe, G, is coiled longitudinally inthe tub around the shaft C, and at its end number l it communicates withthe inner end of the passageway g in the shaft end C. This coil ofpipeis supported by the wings I, and after being coiled to the other shaftend, C', it is coiled longi- 55 .end number 2 being incommunication with6o a longitudinal passage-way in the other shaft end, similar to theoneg, vsogas to place the pipe L and coils G and J in communication withthe interior of the union coupling-joint E, which latter is providedwith an escapepipe, M.

N represents a pipe passing horizontally along under the tub A, and abranch pipes connected by T-couplings to pipe N, and interiorly to thetub A. 7o

m represents check-valves placed in branch pipes u `to prevent theescape of the mash.

O represents a waste-pipe which taps into pipe M.

P is a cock for shutting off the pipe N, and Q a cock for shutting offthe waste-pipe O.V

The inlet and outlet connections through the shaft ends C to pipe G areboth illustrated by F ig. 3, one being in reverse position tothe. other.

My device, as represented in the abov drawings, is adapted to bothcooking and cooling the mash.. Vhen it is desired to be used forcooking, cock P is opened and cock Q turned to cut off the waste-pipe O.Steam is introduced through the supply-pipe c, through theunion-coupling E into the Youtside coil, G, whence it is passed throughsaid 'coil and thence back through the smaller coil J thence backthrough pipe L, through union-joint E; 9o thence through pipe M intopipe N; thence through branch pipes n into the interior of the tub A.

In order to more 'uniformly heat the mash,

power is applied through pulley Bto revolve 9 5 l shaft C, together withthe stirring-coils G J and wings I,'which thoroughly agitate and mix themass, securing a uniform heating of the charge.

The shape of the coils is adapted to secure 10o a uniform mixture andheating of the mass, as the coil G has a tendency to move the mass inone direction, and the reverse coil J, being of the opposite spiral, hasa tendency to move the mass in the opposite direction, while the wings Iand the coil give a rotary motion to the mass, thus securing a uniformagitation and distribution of heat or cold introduced into the coils.When it is desired to cool the mass, cock Q is opened and cock P closed.A stream of cold water is supplied by pipe 0,-which passes through thecoils G'J and out through the coupling E, and thence out the waste-pipeO. This mode of circulating a current of cold water through a series ofcoiled pipes cools the mass very rapidly and uniformly. The Vcoils arerevolved as the water is passed through them, and present a continualchange of Acool surface to the contents of .the mass, carrying off theheat very rapidly, and with a comparatively small amount of water.

One of the advantages secured by the use of this compound coil is thatthe arrangement of the coil upon the revolving shaft is such that a verysmall amount of head of pressure is required to obtain a circulation ot'the water, 'as the action of the coil is such as to draw the waterthrough the coils, and the thorough agitation of the mass, by the coilsmoving through it, secures the maximum amount of cooling effect with theleast amount of water. This method of arranging the coils alsofacilitates the rapid expulsion of the water from the coil when it isdesired to change from cold water to steam.

Another advantage arising from the use of "steam is that the movingspiral coil prevents the condensation of the steam and the alternatemixture of air and condensed Water, which would be otherwise liable tooccur; and, should condensation of steam take place, the revolution ofthe coils is such as to carry oif the water.

I have shown the tub A of semi-cylindrical form Vwith a cover upon thetop. It may, however, be used in diiferent-shaped vessels, as in acylinder provided with man-holes or escapepipes; but the form hereshow-n I deem the best.

I do not wish to limit myself to the means here shown for supporting thecoils in order to revolve them through the mass, as the structural partof the device may be variously modified without affecting the principleof my invention.

This form of tub with its revolving coil has 4the additional advantageof being quickly cleaned or washed by introducing water into theinterior and revolving the shaft and coil to carry off the refuse. v

I claim- Y 1. The combination, with a mash-tub, of a inner and outercoil of pipe, the coils of which extend in reverse directions, withconnections 4 for passing a fluid through the coils, and means forrevolving the same on their horizontal axes, so that said coils act onthe material to move it longitudinally in reverse directions,substantially as described.

2. The combination, with'a mash-tub, of 7o two connected coils of pipearranged one withinthe other, and the coils extending in reverse spirallines,v a horizontal shatt, heads secured thereto, wings carried by theheads and connected with the outer coil, connections for passing a4fluid through the coils, and means for revolving the coils,substantially as described.

3. The combination, with the mash-tub,'of

the horizontal shaft,l the outer coil, G, the inner reverse coil, J, thelongitudinal pipe L, encircled by the inner coil, and connections forpassing a fluid through the coils and pipe, substantially as described.

4. The combination, with a mash-tub, ofthe revolving horizontal shafthaving channeled end portions, the stationary union-joints havinginterior annular chambers in communication with the channels, the inletand outlet pipes connected with the chambers, respect- 9o ively, thecoiled pipe arranged horizontally around and revolving with the shaft,and connected'at its ends, respectively, with the channels in the shaft,the horizontal pipe connected with the outlet-pipe of one of thechambers,

and branch pipes connecting the horizontal pipe with the interior of themash-tub, substantially as described.

In testimony whereof I have hereunto set my hand.

J LEO S. KUHN. Witnesses:

Jos. W. SI-Ms,

M. E. MILLIKAN.

